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H. J. MOREY AND D. N. THOMPSON.

PULL SOCKET.

APPLICATiON FILED JUNEZO, \917- 1,319,963. Patented Oct. 28,1919.

UNITED STATES PATENT OFFICE.

HARRY J. MOREY AND DON N. THOMPSON, F SYRACUSE, NEW YORK, ASSIGNORS TO PASS & SEYMOUR, INCL, OF SOLVAY, NEW YORK, A CORPORATION OF NEW YORK.

PULL-SOCKET.

Specification of Letters Patent.

Patented Oct. 28,1919.

Application filed June 20, 1917. Serial No. 175,885.

T 0 all whom it may concern:

Be it known that we, HARRY J. MOREY and Doe. N. THOMPSON, citizens of the United States, and residing at Syracuse, Onondaga county, State of New York, have invented certain new and useful Improvements in Pull-Sockets, of which the follow-' spindle in position.

ing is a specification.

This invention relates to pull sockets, and has particular reference to a snap switch mechanism therefor, but it is to be understood that certain features of the invention a not limited to use in lamp sockets.

The particular object of the invention is to improve lamp socket switch mechanism and to produce a simple snap switch mechanism which will cause a sudden make and break at the switch contacts to adapt the switch for use with comparatively heavy currents.

The above objects and the novel features of the invention will be apparent from the following description taken in connection with the accompanying drawing which forms a part of this application and in which:

Figure 1 is a side elevation of a pull socket embodying the invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a vertical sectional view of the socket taken through the snappingmechanism and through the switch contacts;

- Figs. 4 and 5 are respectively a bottom plan view of the top insulating buttons and the top plan view of the bottom insulating button with the switch contacts and circuit terminals secured thereto;

Fig. 6 is a dropped perspective view of the spindle with the parts of the switch mechanism and snapping mechanism assembled thereon; and

Fig. 7 is a. horizontal sectional view of the snapping mechanism in its recess in the bottom insulating button, showing the Referring to the drawing, the pull socket comprises an insulating body, which con sists of a top insulating block or button 10 and a bottom insulating block or button 11, which are secured together, but held in spaced relation by two osts 12 and 13, in a well known manner. T e post 12 comprises one of the line terminals of the socket and carries a binding screw 14 by means of -16 consists of the usual screw threaded shell and is secured to the bottom face of the insulating button, 11, by screws 17 and 18. The screw 18 engages one end of a plate 19 on the upper side of the button 11, the free end 20 of the plate 19 extending upwardly into a recess above the part 19 and forming one of the switch contacts of the socket. The top button 10 carries a bracket 21 which is secured to the block by a screw 22 and which carries the other binding screw 23 for securing the other line wire to the socket.

A resilient plate has one end 24 thereof secured to the button 10 by a screw 22 and the other end 25 of said plate is free and constitutes the other switch contact, since it is bent so as to be disposed opposite and above the switch contact 20 on the lower button 11.

The lower button 11 is provided with a rectangular recess 26 adapted to receive the snapping mechanism to be described, and in the'bottom of the recess 26 there is a socket or pocket 27 to receive the lower end of the rotatable spindle 28. The upper end of the rotatable spindle 28 is journaled in a cap or sleeve 29 which is provided with a square head 30, adapted to seat in a square recess 31 in the underside of the upper button 10. The upper but-ton 10 has an opening 32 extending therethrough within the recess 31, through which the end of a screwhead 30 to tension the retracting spring 34, the upper end 35 of which extends through a hole 36 in the head 30.

The spindle 28 has a flattened integral enlarged part intermediate its ends. The fiattened enlarged part is made up of the por -tions 37 and 38 of two different widths driver may be inserted into the slot 33 in the freedom of movement independently of the spindle 28. The disk 40 is provided with radial slots 42, which open to the edge of the disk, and a strip of copper 43, is curved in the form of a segment to conform to the edge of the disk and is wound into the slot 42 and held there due to the radial position of the slots. The ends of the stripare located in one slot and the disk 40 is positioned so that when it is rotated the bend intermediate the ends of the strip 43 will be in front. By this arrangement two parts of the strip 43 fit fiat against the top and bottom sides of the disk 40 and when the strip nassesbetween the contacts 20 and 25, the circuit will be closed, and when the strip passes from between these contacts, the circuit will be open. The operating device for rotating the spindle 28 consists-of a lever 44 provided at one end .with a hole 45 through which the spindle 28 passes. At 46 the lever 44 is bent upwardly to provide a curve for the hook 47 at the lower end of the retracting spring 34. At its outer end the lever 44 has a depending fiange or chain rail 48 provided at one end with the usual eye 49 to receive the end ball of. a pull chain 50. The pull chain extends through a guide member 51 secured to the post 13. The operating lever M is also provided with a depressed lug or tooth 52 adapted to engage the upper end of the enlargement 37 which projects through the hole 41 in the disk 40. It will be apparent that when the lever 44 is operated by pulling the chain 50 the lug 52 will engage the extension for the enlarged part 37 of the spindle and turn the latter with the disk 40, and the switch 43. After a complete forward pull of the chain 50, and lever 44, the chain is released and the spring 34, having been properly tensioned, returns the lever 44 to its initial position with the eye 49 abutting against the stop 58 on the lower insulating button 11.

Before the complete operation of the lever 44 the spindle and disk and switch carried thereby are suddenly thrown either to or from closed circuit position by a snapping mechanism. The snapping mechanism consists of a rectangular frame which fits in the recess 26 in the lower block 11. One end 54 of the frame has a hole 55 therein through which a pin 56 slides. The inner end of the pin carries a plate or cam 57 and a spring 58 located between the end wall 54 and the plate 57 presses the spring 58 toward the opposite end 59 of the snapping frame. The

- smaller portion 88 of the flattened part of the spindle 28 is normally held between the plate 57 and the end 59 of the frame and whenever the spindle is turned by the lever 44, the spring pressed plate 57 tends to cause the flatpart 38 of the spindle to return to the normal position from the position shown in Fig. 7. The arrangement is such that the lever 44 turns the spindle, together with the disk 40 and switch 43 in a counter-clockwise direction. One end of the plate 57 is inclined, as at 60, and the opposite ends of the flat part 38 are also inclined as at 61, so that the corners of the cotiperating parts will offer no resistance to the snapping action.

When the spindle is turned so that the partsare in the position shown in Fig. 7, it will be understood that the lever 44 has not completed its movement and a slight movement further in the same direction will cause the flat part 38 to move past center, slide oil the inclined or cammed part 60, permitting the spring 58 to quickly press the fiat part 38 against the end wall 59 to throw the switch in either its on or 01? position. This sudden movement of the switch 43 prevents injurious arcing, and affords a small switch mechanism which will break comparatively heavy currents.

The operation of the switch will be apparent from the foregoing description and while the construction of the mechanism has been shown in detail, it is to be understood that various changes may be made therein without departing from the spirit of the invention.

Having thus described our invention, what is claimed and desired to be secured by Letters Patent is:

1. An electric switch mechanism, comprising an insulating supporting body, switch contacts mounted on said body, a spindle rotatably supported by said body and having an enlargement, a switch member cooperating with said contacts, an insulating disk mounted on said spindle to rotate therewith and carrying said switch member, an operating device for turning said spindle, insulating disk and switch member, and means for suddenlythrowing said switch member into and out of engagement with said. switch contacts comprising a spring llQ pressed element engaging the enlargement of the spindle and acting to throw the spindle suddenly after a partial operation of said operating device.

2. An electric switch mechanism, oompris- 115 mg an insulating supporting body having a recess therein, a spindle rotatably mounted on said body and having a non-circular enlargen'ient intermediate its ends, a switch member, an insulating element carrying said 120 switch member and having an opening fitting a' part of the enlargement on the spindle, an operating device for turning the spindle, insulating element and switch member carried thereby, and means for suddenly 125 turning the spindle after a partial operation of said operating device, oomprisin a frame fittlng in the recess in the insulatln body, and a spring pressed element wit 'n the frame, a part of the enlargement of the spin 130 dle being disposed between one side of the frame and said spring pressed element.

3. An electric switch mechanism for lamp sockets, comprising a body consisting of two rotate with. the spin insulating blocks secured together, a switch contact on each block, said switch contacts being disposed opposite each other, a switch member adapted to pass between said contacts to electrically connect them, an insulating disk carryin said switch member and having a non-circular opening therein, a rotatable spindle journaled at its ends in said blocks and having an enlargement intermediate its ends, a part-of said enlargement extending through the opening insaid insulating element, an operating lever pivoted on the spindle and having a lug co operating with a part of the spindle whereby said spindle is'turned when said lever is operated, and means cooperating with the enlargement on the spindle to suddenly throw said spindle and the switch member thereon upon the operation of said lever.

4. In an electric switch mechanism, the combination of an insulating body having a recess therein and also having a pocket in the bottom of the recess, a spindle having one end journaled in said pocket and having a flattened enlargement, a switch member, means for supporting the switch member to le, means for rotating the spindle, a frame freely movable in said recess, and a spring pressed element mounted on said frame, a part of the enlargement of said spindle being disposed between one side of said frame and said spring pressed element, for the purpose described. 5. An electric switch mechanism for lamp sockets, comprising a supporting body consisting of'two insulating blocks secured together, one of said blocks having a recess therein and a pocket in the bottom of the recess, the other block having an opening therein, a spindle journaled in said pocket and in said opening and having a flattened enlargement intermediate its ends provided with a shoulder, a rectangular frame freely movable in said recess below the shoulder of said enlargment, one end of said frame having a hole therein, a pin extending through said hole, an elementsecured to the inner end of said pin, a spring disposed between said element and the side of the frame having the hole therein, the portion below the shoulder of the enlargement of the spindle being disposed between the other end of the frame and said element carried by said pin, the face of said element bearing against the enlargement of the spindle having an inclined portion, an insulating disk having an opening extending across the center thereof, the enlargement of the spindle above said shoulder passing through said opening in the insulatin disk and extending above said disk, 3. switc member carried by said insulating disk, and an operating lever pivoted on the spindle above said enlargement and having a lug extendin downwardly and adapted to engage sai enlargement when the operating lever is actuated to turn the spindle, disk and switch member.

6. An electric switch mechanism, comprising an insulating supporting body, a spindle rotatably mounted thereon, sald spindle having an integral lateral extension, an insulating disk mounted on said spindle and having an opening to receive a part of said lateral extension, a switch member carried by said insulating disk, an operating leverpivoted on the spindle above the lateral extension and having a lug adapted to engage said lateral extension to turn the spindle when the operating lever is actuated, and means for snapping the spindle, insulating disk and switch.

7. An electric switch mechanism, comprising a rotatable spindle having an integral lateral extension, an insulating element having an opening to receive a part of said extension, a swltch member carried by said element, an operating member having a lug adapted to-engage said extension to turn the spindle, and means cooperating with said extension to cause asudden movement of the spindle, insulating element and switch member during the operation of said operating member.

In testimony whereof we aflix our signatures.

HARRY J. MOREY. DON N. THOMPSON. 

